M4A1 Helically fluted gun barrel



FIG. 1 is a muzzle end isometric view of the M4A1 helically fluted gun barrel.

FIG. 2 is a plan view of the M4A1 helically fluted gun barrel (top and front are identical to this plan view, whereas bottom and back are a mirror image of this plan view); and,

FIG. 3 is a right side elevation view (muzzle end) of the M4A1 helically fluted gun barrel.

Views are orthogonal projections unless otherwise noted. The various views are not necessarily to scale in order to better illustrate the design. 

CLAIM The ornamental design for a M4A1 helically fluted gun barrel, as shown and described. 